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The Sustainable Landfill
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The Sustainable Landfill

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Turning waste into usefull products like energy, clean water and fertilizers

Turning waste into usefull products like energy, clean water and fertilizers

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The Sustainable Landfill The Sustainable Landfill Presentation Transcript

  • “ The sustainable landfill” “ Making waste green” R. Lems M.Sc. , R&D Manager DMT Environmental Technology rlems@dmt-et.nl
  • DMT
    • Founded in 1987
    • Custom solutions for environmental problems
    • (Turn-key) Project realization
    • Professional partner for industry and government
    • Multi disciplinary, international, leading company
  • Odour Sludge BioSulfurex ® CarbO 2 rex ® DMT Odourex ® Clean water Clean air Biogas I-WOX ® MemBioRex ® Wastewater Air purification Bioreactor Digesting
  • Sustainable ?!
    • Leachate
      • Toxic
      • Eutrophication
      • Oxygen depletion
    • Biogas
      • CH 4 /CO 2 / H 2 S/H 2 SO 4
      • Heat
  •  
  • Landfill options
  • Biogas treatment Substance % Methane, CH 4 45-75 Carbon dioxide, CO 2 25-45 Carbon monoxide, CO 0-0,3 Nitrogen, N 2 1-15 Water, H 2 O Saturated Hydrogen sulfide, H 2 S 0,1-0,5 Oxygen, O 2 0.1-5
  • H 2 S + O 2 => H 2 SO 4 (acid production!) T=30C pH= 0.5-1.5 Biological desulphurization DMT-BioSulfurex ® No Chemical use!
  • Biogas in Scrubber 9bar Flash Vessel Drying Unit Stripper Water CO 2 production Treated Biogas: 98% CH 4 No Chemical use! Biogas upgrading DMT-CarbO 2 rex ®
  • Plant Examples Biogas upgrading DMT-CarbO 2 rex ®
  • Screen Bioreactor Ultra- filtration Nano filtration Reverse Osmoses Irrigation water Drinking water Leachate treatment DMT-MemBioRex ® 300-1,500 5-50 2,000-4,500 2,000-5,000 10,000-50,000 Leachate 0 TSS <0.5 P <25 NH 4 <150 Nt <125 COD Effluent NF
  • Leachate treatment DMT-MemBioRex ®
    • Problems for Leachate treatment
      • High power demand for aeration
      • Minimum temperature >20C for optimal efficiency
      • High pH/ Ammonium (toxic)
      • High alkalinity (Calcium/ Magnesium)
      • Sludge production
    • Solution from biogas treatment
      • CHP produces heat and electricity
      • Biological desulphurization produces sulphuric acid
      • CO 2 can be used to precipitate Ca/ Mg (CaCO 3 )
      • Sludge can be used to make more biogas
  • The sustainable Landfill
  • The sustainable Landfill 50ha 6.000-7.000Nm 3 /hr 100-125m 3 /hr Biogas 5.500-6.500Nm 3 /hr Natural gas 4.800-5.300Nm 3 /hr 300 trucks 15m 3 /day diesel 4.000-4.500 Nm 3 /hr Natural gas 3 Mw e and 3.5 Mw q (1000Nm 3 /hr) 30 ton sludge/day 100-125m 3 /hr 1.5Mwq 500Nm 3 /hr 250 kg/hr Fertilizer 90-100m 3 /hr
    • Input is only waste (no more energy/ fuel)
    • Output is energy and clean water
    • Emission reduction is >90%
    Sustainable ?! YES!
  • “ The sustainable landfill” “ Making waste green” R. Lems M.Sc. , R&D Manager DMT Environmental Technology rlems@dmt-et.nl